# Electric Power

Written by Jerry Ratzlaff on . Posted in Electrical Engineering

Power $$(P)$$ is the rate of doing work and is measured by the amount of foot pounds of work done in a particular unit of time. A horsepower is a measure of power.

## Power (Watt) formulas

 $$\large{ Watts = \frac{Volts^2}{Ohms} = P = \frac{V^2}{R} }$$ $$\large{ Watts = Volts^2 \; Ohms = P = V^2 \; R }$$ $$\large{ Watts = Volts \; Amps = P = V \; I }$$

### Where:

 Units English Metric $$\large{ P }$$ = power $$\large{W}$$ $$\large{\frac{kg-m^2}{s^3}}$$ $$\large{ I }$$ = current $$\large{I}$$ $$\large{\frac{C}{s}}$$ $$\large{ R }$$ = resistance $$\large{\Omega}$$ $$\large{\frac{kg-m^2}{s^3-A^2}}$$ $$\large{ V }$$ = volt $$\large{V}$$ $$\large{\frac{kg-m^2}{s^{3}-A}}$$

Tags: Electrical Equations